Answers

Yes . This a UK website which has international members too. If you wanted to buy an item from one of the advertisers you would probably need to contact them to see if they ship overseas and for international shipping prices .

Best to look for a supplier for those plants in the U.S.
although there are Zones. So the plant would not be sold to someone in the wrong Zone, meaning it would not stand the winter months.
It is also illegal to import some plants into the U.S.
I dont know why.